The article is in french but it's basically the same reasons that many other orgs had to drop their roster. OWL required entry fee and the uncertainty surrounding the professional scene made it tough for them.
So many revelations from the Contenders squad, Poko, BenBest, Leaf, Hqrdest, Hyp and Pipou really did something incredible. Hopefully we'll get to see some of them in Contenders S2.
Leaf is doing a stream tonight at 8pm CEST to talk more about what's in the future and all, I'll update this thread if I'm home to watch it.